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It is not clear to me what do you plan to do with such product, so i fear there is no good answer to your question, perhaps could you try to be more precise on your goals.
That said, when dealing with algebraic objects, a classical trick is to use polynomial indeterminates instead of symbols. In your case, it could be something like:
sage: R.<e> = PolynomialRing(C)
sage: R
Univariate Polynomial Ring in e over Complex Field with 53 bits of precision
sage: e*x
x*e
